Moments after their introduction, Aubameyang bagged his brace in the encounter with an assist from Ramsey in the 56th minute followed by Lacazette’s effort in the 74th minute before Lucas Torreira sealed the maximum points with his first Arsenal goal three minutes later.

And the former Cameroon defender who was a key member of the Invincibles has explained how the gaffer’s decisions changed the game for the Gunners who are yet to lose a Premier League game since the back-to-back losses to Chelsea and Manchester City in August.

“A tactical masterstroke from Emery with his substitutions at 2-1 down. Introducing Ramsey and Lacazette pulled the Tottenham defenders out wide,” Lauren tweeted.

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“This left spaces to be exploited by players arriving late into the box, as seen with Aubameyang & Torreira's goals."

A tactical masterstroke from Emery with his substitutions at 2-1 down. Introducing Ramsey and Lacazette pulled the Tottenham defenders out wide.

This left spaces to be exploited by players arriving late into the box, as seen with Aubameyang & Torreira's goals. #NorthLondonDerby
— Lauren Etame Mayer (@Lauren12arsenal) December 2, 2018